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• W2989855230 abstract "Abstract Background Development of metastases and drug resistance are still a challenge for a successful systemic treatment in breast cancer (BC) patients. One of the mechanisms that confer metastatic properties to the cell relies in the epithelial-to-mesenchymal transition (EMT). Moreover, both EMT and metastasis are partly modulated through epigenetic mechanisms, by repression or induction of specific related genes. Methods We applied shRNAs and drug targeting approaches in BC cell lines and metastatic patient-derived xenograft (PDX) models to inhibit WDR5, the core subunit of histone H3 K4 methyltransferase complexes, and evaluate its role in metastasis regulation. Result We report that WDR5 is crucial in regulating tumorigenesis and metastasis spreading during BC progression. In particular, WDR5 loss reduces the metastatic properties of the cells by reverting the mesenchymal phenotype of triple negative- and luminal B-derived cells, thus inducing an epithelial trait. We also suggest that this regulation is mediated by TGFβ1, implying a prominent role of WDR5 in driving EMT through TGFβ1 activation. Moreover, such EMT reversion can be induced by drug targeting of WDR5 as well, leading to BC cell sensitization to chemotherapy and enhancement of paclitaxel-dependent effects. Conclusions We suggest that WDR5 inhibition could be a promising pharmacologic approach to reduce cell migration, revert EMT, and block metastasis formation in BC, thus overcoming resistance to standard treatments." @default.
• W2989855230 created "2019-12-05" @default.
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• W2989855230 date "2019-11-21" @default.
• W2989855230 modified "2023-10-18" @default.
• W2989855230 title "WDR5 inhibition halts metastasis dissemination by repressing the mesenchymal phenotype of breast cancer cells" @default.
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• W2989855230 doi "https://doi.org/10.1186/s13058-019-1216-y" @default.
• W2989855230 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6873410" @default.
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• W2989855230 hasPublicationYear "2019" @default.
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